Yes. As an L-2 spouse she is employment-authorized incident to status and may take any lawful job once admitted, without a separate work permit, in hospitality or elsewhere. Her authorization ends when the specialist's L-1B status ends.
The L-2 spouse's permission is general and derivative
USCIS recognizes L-2 spouses as employment-authorized incident to status, so the wife's admission in L-2 status is itself her permission to work, evidenced by her admission record annotated for L-2 spouses; an employment-authorization document is optional. She need not work at the U.S. property or in hospitality, and she is not tied to the petitioning company in any way.
The permission is derivative: if the specialist's L-1B ends, is revoked or expires at the five-year limit, the wife's status and her right to work end with it, and she cannot stay in L-2 status while the principal is outside the United States for an extended period. Children admitted in L-2 status may attend school but cannot work, and their status ends at twenty-one or on marriage. For a Harrison Hot Springs family this means the wife can plan on earning from arrival, but the household should not build long-term plans on L-2 alone.
A household review should produce separate status rows for the principal, spouse, and each child, with passport validity, admission class, I-94 details, and planned work or study activity. The spouse should check that the admission record reflects the appropriate L-2 spouse classification before completing an employer's I-9 process; children do not receive employment permission simply from L-2 status. Hypothetical example: A digital-forensics laboratory transfers a specialist whose spouse has a remote job offer from a U.S.
software publisher. The spouse's admission record and the employer's onboarding file, rather than the principal's petition approval alone, determine whether the job can begin.